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Feasibility Issues of Using Three-Phase Multilevel Inverter based Cell Balancer in Battery Management System for xEVs
RISE, Swedish ICT, Viktoria.
2013 (English)In: IFAC Proceedings Volumes, Vol. 46, p. 360-, article id 21Article in journal (Refereed) Published
Abstract [en]

The use of a three-phase multilevel converter (MLC) as an integrated cell balancer and motor driver is investigated for three-phase AC applications in EVs/HEVs/PHEVs. The paper analyzed an issue of additional battery losses caused by the flow of reactive and/or harmonic power from each power cell of the three-phase MLC battery system. The paper also investigates the size of shunt capacitor required for compensation of the losses to acceptable level. This study concludes that the size of the required capacitor is too big for the vehicle application unless some other active compensation is used as well. Another practical way to employ the MLC as a cell balancer is to use it in a cascaded connection with the conventional three-phase two-level voltage source inverter however it may not be a cost-effective solution either due to high component count.

Place, publisher, year, edition, pages
2013. Vol. 46, p. 360-, article id 21
Keywords [en]
Hybrid electric vehicles, Batteries, Cell balancing, Three-phase multi-level converter, Reactive power and dc-link current ripple issues, DC-link capacitor sizing
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-25160DOI: 10.3182/20130904-4-JP-2042.00056OAI: oai:DiVA.org:ri-25160DiVA, id: diva2:1132687
Conference
7th IFAC Symposium on Advances in Automotive Control. Tokyo, Japan, Wednesday, September 4, 2013
Available from: 2018-07-02 Created: 2016-10-31 Last updated: 2018-07-02Bibliographically approved

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